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Marquise|Lab Grown|IGI

3.51ct G VS1 Marquise Lab Grown Diamond

EX • G/VS1 • IGI LG735549045

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG735549045

Diamond specifications and retailer prices

From $590 USD
As of October 30, 2026
Save $2,584 USD (81%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $3,174 USD at MOH London · As of November 1, 2026
View at MOH London

About this 3.51ct lab-grown marquise diamond

This 3.51ct lab-grown marquise sits in the three to five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG735549045 or 735549045. Listed at 10 retailers as of October 30, 2026, with prices from $590 to $3,174, a $2,584 spread on the same certified stone. MOH London lists it at $3,174. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.51
Carat
G
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG735549045
Dimensions16.19 × 7.84 × 4.89 mm
L/W Ratio2.07
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.19 mm7.84 mm3.51 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG735549045
Side View
Table 58.0%Crown 34.1°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 62.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $3,174 USD|Low: $566 USD|High: $3,212 USD|Avg: $1,515 USD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 1, 2026
Retailer 11$590 USD
Retailer 14$660 USD
Retailer 15$660 USD
Retailer 2$814 USD
Retailer 6$953 USD
Retailer 13$1,124 USD
Retailer 9$1,125 USD
Retailer 7$1,213 USD
Retailer 8$1,544 USD
Retailer 5$1,653 USD
Retailer 10$1,814 USD
Retailer 12$1,923 USD
Retailer 4$2,134 USD
Retailer 3$2,589 USD
MOH London$3,174 USD

24 data points across 15 retailers

10 retailers$590 USD to $3,174 USD

A
Cheapest Retailer
-
$590 USD
A
Retailer 2
-
$660 USD
View
A
Retailer 3
-
$660 USD
View
Final sale: no returns
A
Retailer 4
-
$814 USD
£641 GBP
View
A
Retailer 5
-
$1,124 USD
View
A
Retailer 6
-
$1,125 USD
View
B+
Retailer 7
-
$1,544 USD
A$2,375 AUD
View
B+
Retailer 8
-
$1,814 USD
View
B+
Retailer 9
-
$1,923 USD
View
Most Expensive
B
MOH London
LG735549045 · Nov 1
$3,174 USD
£2,499 GBP
View
9 more retailers have this diamond
Prices start from $590 USDSave up to $2,584 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
3.51ct Marquise
$590 USD